NHibernate 4.x Cookbook - Second Edition

Chapter 7. Data Access Layer

In this chapter, we will cover the following topics:

• Transaction auto-wrapping for the data access layer
• Setting up an NHibernate repository
• Using named queries in the data access layer
• Using ICriteria in the data access layer
• Using paged queries in the data access layer
• Using LINQ specifications in the data access layer

Introduction

There are two types of data access layers that are common in today's applications: Repositories and Data Access Objects (DAO). In reality, the distinction between these two has become quite blurred; however, in theory, it's as follows:

• A repository should act like an in-memory collection. Entities are added to and removed from the collection and its contents can be enumerated. Queries are typically ...